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Thank you for purchasing this Toshiba Air to Air Heat Exchanger with DX Coil Unit
This Installation Manual describes the installation method of the Air to Air Heat Exchanger with DX Coil Unit. For installation of
outdoor units, follow the Installation Manual supplied with the outdoor unit.
Moreover, as this installation manual includes the important articles concerning the “Machinery” Directive (Directive 2006/42/
EC), please read through the manual and make sure you understand it. After installation, give this Installation Manual, the
Owner’s Manual and the Installation Manual supplied with the outdoor unit to the customer and tell the customer to keep them
safe.
Prepare an exclusive power source for indoor units, independent to that for outdoor units.
Y-shaped branching joints or a branching header (separately purchased) are required for connecting pipes between indoor and
outdoor units. Choose either of them considering the system capacity concerning piping. For installing branching pipes, refer to
the installation manual of the Y-shaped branching unit or branching header (separately purchased).
Outdoor connecting branching joints are required for connecting between outdoor units.
Generic Denomination: Air conditioner (Air to Air Heat Exchanger with DX Coil Unit)
Definition of Qualified Installer or Qualified Service Person
The Air to Air Heat Exchanger with DX Coil Unit must be installed, maintained, repaired and removed by a qualified installer or
qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them
for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table
below.
Definition of Protective Gear
When the Air to Air Heat Exchanger with DX Coil Unit is to be transported, installed, maintained, repaired or removed, wear
protective gloves and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed
in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks
and other injuries.
Agent
Qualifications and knowledge which the agent must have
Qualified installer
• The qualified installer is a person who installs, maintains, relocates and removes the Air to Air Heat Exchanger with
DX Coil Units made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and
remove the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier Corporation or, alternatively, he
or she has been instructed in such operations by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and removal has
the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is
a person who has been trained in matters relating to electrical work on the Air to Air Heat Exchanger with DX Coil
Units made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to
this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation,
relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as stipulated
by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant
handling and piping work on the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier Corporation
or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been
trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working at heights
with the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier Corporation or, alternatively, he or
she has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
Qualified service
person
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the Air to Air Heat
Exchanger with DX Coil Units made by Toshiba Carrier Corporation. He or she has been trained to install, repair,
maintain, relocate and remove the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation, repair, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and
he or she is a person who has been trained in matters relating to electrical work on the Air to Air Heat Exchanger
with DX Coil Units made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such
matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work involved in installation,
repair, relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as
stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to
refrigerant handling and piping work on the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have
been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to working at
heights with the Air to Air Heat Exchanger with DX Coil Units made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
Warning indications on the air conditioner unit
Work undertaken
Protective gear worn
All types of work
Protective gloves
‘Safety’ working clothing
Electrical-related
work
Gloves to provide protection for electricians and from heat
Work done at heights
(50 cm or more)
Helmets for use in industry
Transportation of
heavy objects
Shoes with additional protective toe cap
Repair of outdoor unit Gloves to provide protection for electricians and from heat
Warning indication
Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
WARNING
Moving parts.
Do not operate unit with inspection cover removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned when removing this cover.
CAUTION
Do not touch the aluminium fins of the unit.
Doing so may result in injury.
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote
electric power supplies
before servicing.
WARNING
Moving parts.
Do not operate unit with
inspection cover removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned
when removing this cover.
CAUTION
Do not touch the aluminum
fins of the unit.
Doing so may result in injury.
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